Something unexpected and irrelevant, but often amusing. A very over-used word now, please people, use it when something really is random. See example below for a true example of random.

Holly: Sorry to hear your hamster died Bob...
Bob: Window cleaners for British rail should watch out for flying man-eating deckchairs today, swimming in from the south along with the flea-ridden coathangers. The calf needs the blinds shut due to his purple parrot problem, and the pet washing line needs a slap round the face for dropping the flying monkey on the "queen of the night" tulips. The muffin man is responsible for the sudden outburst of rain yesterday as he forgot to pay the rent on his blue strawberries. I'm sorry, did you say you wanted a biscuit?
Holly: Random! Custard cream please.

The latest word used by stupid teens who think they are so unique and unpredictable. They even use it when they talk. "Hey, look at that random building" What the hell makes that building so 'random'? Apparently is really funny too. Saying the word "cheese" out of nowhere in the middle of a conversation doesn't just ruin the moment, it makes you look even more pathetic.

The most frequently used word by DCDB's other than the expressions "Omigawdd!" and "Shut-up!" Often pronouned in a very drawn-out manner, such as "RAAAAN-dom!" for the purposes of making the speaker look "wacky."

"Julie that was soooooooo random! I can't believe you know stuff about books."